Irjet V5i11287 PDF
Irjet V5i11287 PDF
Irjet V5i11287 PDF
3. CHEMICAL PROPERTIES
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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 11 | Nov 2018 www.irjet.net p-ISSN: 2395-0072
4.2.1 Workability
Slump value for reference mix 0WS is found to be 120 mm Chart -1: Correlation between computed and measured
and for 50WS concrete mix, it is found to be 30 mm. The compressive strengths.
results are presented in Table 2. It is understood that
inclusion of the WCFS in concrete reduces the workability. Table -3: Measured and computed compressive strength
The reason for reduction in workability may ascribe to the
fact that the water absorption capacity of WCFS is more than Mixtur Measured strength (N/mm2) Computed
that of natural sand. (M.K. Dash, S.K. Patro, 2018) es strength
design (N/mm2)
Table -2: Fresh concrete properties of mixes ation 14 28 91 180 91 180
Days Days Days Days Days Days
0WS 10W 20W 30W 40W 50W 0WS 35.99 42.89 47.08 48.63 47.98 49.17
S S S S S 10WS 37.70 41.93 46.59 47.57 46.90 48.07
Fresh 2512 2493 2477 2462 2449 2435 20WS 33.63 37.47 44.26 45.01 41.91 42.96
densi
30WS 33.70 38.76 42.59 43.96 43.36 44.44
ty(kg
40WS 33.73 38.61 41.77 42.89 43.19 44.27
/m3)
50WS 33.66 36.73 39.32 40.67 41.09 42.11
Slum 120 100 80 70 50 30
p(m
m) 4.2.3 Ultra sonic pulse velocity
By using the equation prescribed by ACI 209, the 4.2.4 Split tensile strength
compressive strength of concrete with time is computed. The
recorded values are shown in Table 3. The variation in Splitting tensile strength test of the all concrete mixes are
results between achieved and computed strength are very conducted at the age of 28, 91 and 180 days and the values
marginal. The correlation among the measured and are recorded in Table 5. It can be inferred that the splitting
computed compressive strength are shown in Chart 1. The tensile strength values decreases with an increase in value of
linear regression establishes that the measured strength WCFS at the rate of 1-12%. It is found that with age the split
matches with the computed strength. (M.K. Dash, S.K. Patro, tensile strength of all concrete specimens are found to
2018) increase. As age increases from 28 days to 91 and 91 to 180
days, split tensile strength increases by 1–6% and 2–6%
respectively. The results are found consistent to that of the
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1502
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 11 | Nov 2018 www.irjet.net p-ISSN: 2395-0072
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1503
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 11 | Nov 2018 www.irjet.net p-ISSN: 2395-0072
4.37%, 4.42%, 4.28%, 4.31%, 4.35% between 91 and 180 combination quantitative relation. For this coarse aggregate
days for concrete mixtures 0WS, 10WS, 20WS, 30WS, 40WS is replaced by ferrochrome scum aggregate at an increasing
and 50WS respectively. The elastic modulus of the concrete rate of 25%. For each contemporary and hardened property,
is assessed at 28, 91 and 180 days of curing, from the all the mixes developed are studied and tested. Total of
observed values of compressive strength based on the ninety specimens are casted. Compressive and split strength
equation as recommended by IS 456:2000, and is presented tests are conducted within the laboratory. (Susheel S M ,
in Table 7. Sathwik S R, Vinayak T3,Darshan S, Sanjith J and Ranjith A,
2016)
Fineness 3.71 5
modulus
Table 9. (Susheel S M , Sathwik S R, Vinayak T3,Darshan S, It can be observed that there is an increase in compressive
Sanjith J and Ranjith A, 2016) strength with increase in percentage of ferrochrome slag
aggregate upto 75%. There is also considerable increase in
Table -9: Results of tests on fresh concrete strength with time. (Susheel S M , Sathwik S R, Vinayak
T3,Darshan S, Sanjith J and Ranjith A, 2016)
Sl.No. Grades Ferroc Slump Compa Vee-
of hrome (mm) ction Bee 5.3.3 Splitting tensile strength
concre slag Factor degree
te replac in s Splitting tensile strength is administered by inserting a
ement cylinder specimen horizontally between the loading surfaces
of a compression testing machine. The load is applied till the
1 0 25 0.82 16 cylinder fails, along the vertical diameter. The loading
condition produces a high compressive stress directly below
2 25 29 0.80 15 the two generators, to that the load is applied. However the
larger portion remaining depth is subjected to a
3 M25 50 30 0.78 14 homogeneous tensile stress acting horizontally. It is
observed that the compressive stress is acting for 1/6 depth
and remaining 5/6 depth is subjected to tension. The
4 75 32 0.74 11
cacophonous check is easy to perform and offers additional
uniform results than different tension tests. Strength
5 100 35 0.72 8
determined within the cacophonous check is believed to be
near to the true strength of concrete, than the modulus of
rupture. Cacophonus strength provides 5 to 100% higher
From the table it can be observed that both slump and Vee-
price than the direct strength. (Susheel S M , Sathwik S R,
bee time values decreases and Compaction factor value
Vinayak T3,Darshan S, Sanjith J and Ranjith A, 2016)
increases with the increase in percentage of Ferrochrome
slag aggregate. (Susheel S M , Sathwik S R, Vinayak Table -11: Results of split tensile strength
T3,Darshan S, Sanjith J and Ranjith A, 2016)
Sl.No Grade Replacemen Split tensile
5.3.2 Cube compressive strength test t of strength(N/mm2)
Ferrochrom
Strength in compression is one of the important properties e slag 7 14 28
of concrete. It has a certain relationship with other aggregate Days Days Days
properties of concrete. The properties are improved by (%)
improvement in compressive strength. The size of the
specimen tested is 150x150x150 mm. Concrete cubes are 1 0 2.92 3.05 3.33
tested for 7, 14 and 28 days strength as per IS: 516-1959
(Part 5). Compressive load is applied at 1.40 KN/cm2/min 2 25 3.08 3.40 4.03
and it is tested in a compression testing machine. The
compressive strength of concrete mix is shown in Table 10. 3 M25 50 3.19 3.56 4.36
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1505
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 11 | Nov 2018 www.irjet.net p-ISSN: 2395-0072
strength, flexural strength and MOE decreases up to 10% [6] S.K. Nath(2018), ʻʻGeopolymerization behavior of
when the WCFS upto 30% are added. By replacing equal ferrochrome slag and fly ash blends”; Construction and
mass of virgin sand, concrete containing 30% WCFS can be Building Materials 181.
prepared. Thus the utilization of fine aggregate from natural [7] Susheel S M , Sathwik S R, Vinayak T3,Darshan S, Sanjith
source can be reduced. (M.K. Dash, S.K. Patro, 2018) J and Ranjith A (2016), ʻʻ Development of Normal
Strength Concrete using Ferrochrome Slag Aggregate as
The following conclusions are drawn from the experiments Replacement to Coarse Aggregate”; IJISET -
conducted on conventional coarse aggregate concrete and International Journal of Innovative Science, Engineering
ferrochrome aggregate replaced concrete of M25 grade. The & Technology, Vol. 3(6)
basic properties of ferrochrome slag mixture like Relative
density, Bulk density and impact worth area unit is higher
than that of the standard coarse mixture. This indicates that
the standard of fabric is nice and therefore the concrete
prepared using the ferrochrome slag can have high density.
The fineness modulus for all the aggregates are nearly same
and thus there might not be much variation in physical
behaviour. Compressive strength of concrete increases with
increase of ferrochrome slag up to seventy fifth
replacements and decreases slightly at 100 percent
replacement. Similarly split tensile strength also increases
with increase of ferrochrome slag upto seventy fifth
replacement and decreases slightly at 100 percent
replacement. Thus we can conclude that ferrochrome slag
aggregate can be used as a replacement for conventional
coarse aggregate. (Susheel S M , Sathwik S R, Vinayak
T3,Darshan S, Sanjith J and Ranjith A, 2016)
REFERENCES
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 1506